Hiroshi Araki

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Katsuta, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical star coupler and method of manufacturing the same
- Patent number 4,842,359
- Issue date Jun 27, 1989
- Hitachi, Ltd.
- Katsuyuki Imoto
- G02 - OPTICS
Information Patent Grant
Phase modulation type fiber optic gyroscope
- Patent number 4,796,993
- Issue date Jan 10, 1989
- Hitachi, Ltd.
- Hisao Sonobe
- G01 - MEASURING TESTING
Information Patent Grant
Optical star coupler and method for manufacturing the same
- Patent number 4,726,643
- Issue date Feb 23, 1988
- Hitachi, Ltd.
- Katsuyuki Imoto
- G02 - OPTICS